My electrical theory is fair but not great. Can someone please advise me.
I have an old Anglepoise lamp with painted metal arms and painted metal lampshade (Anglepoise model 90). It has a two-core mains lead. I am in the UK so this is all at 230-240 volts.
Today I touched the outside of the lampshade and got a sort of vey mild tingle feeling which felt "odd". When I used a mains tester screwdriver on the exposed metal (at the joint of the lampshade and support arm) then it glowed as if the metal of the Anglepoise lamp was live.
I unplugged the lamp and tested the resistence between the live pin on the mains plug and some exposed metal on the lamp. I got no resistence reading at all (i.e. it must have been a very high resistence). I then tested the neutral pin in the same way and got the same high resistence result.
So the lamp seems ok. But something seems to be wrong!
QUESTION: Is my lamp safe to use and could I get a shock from it in its present condition?
QUESTION: If my lamp is unsafe then is there a repair I can do?
Thank you for any info. Lars
PS: Picture of Anglepoise model 90: